Vibration dampening fitting



March 26, 1946. J. N. WOLFRAM 2,397,180

VIBRATION DAMPENING FITTING I Fi1 ed Feb. 8; 1944 2 Sheets-Sheet 1 EQUIP-E.-

March 26, 1946. I J. N. WOLFRAM' VIBRATION DAMPENING FITTING Filed Feb. 8, 1944 2 Sheets-Sheet 2' 1 0 v a 3 A I W m V, 5 \u\ u a a; i z w l w h %w m 1 Z I able ring will cause the sleeve to grip the tube for Patented Mar. 2 6 1946 1 "UNITED STAT ESiPATENT v OFFICE VIBRATION DAMPENING John N. Wolfram, Cleveland, Ohio, asaignor to The Parker. Anplianc e Company, Cleveland,

Ohio, a corporation of Ohio Application February 8, 1944, Serial No. 521,556

The invention relates to new and useful improvements in a coupling for tubes and more particularly to a coupling which is provided with means for gripping the tube and for vibrations within the tube. Ah object of the invention is to provide a couplingincluding a body member, ,a nut, a clamp-. ing sleeve and a deformable ring which is so constructed that the nut operating upon the deformdampenin vide a tube coupling of theabove type wherein the nut and sleeve are so constructed that after the deformable member has been expanded into as 5 Claims. (oi. ass-8.6)

' wherein the clamping sleeve digs into the tube contact with the'sieeve said'nut positively engages the head of the sleeve for forcing it endwise into gripping relation withthe tube. These and other objects will in part be obvious and forces the tube endwise against a seatfl in the body member.

Figure 8 is a view similar to Figure ing the coupling in closed position.

The invention has to' do with a coupling for 7 .but howtubes. The coupling as shown in Figures 1 to 3 inclusive includes a body member I a nut 2, a sleeve 3, and a deformable ring 4. The tube which'is clamped against the body member is indicated at I. Said body member is provided with means by which it may be firmly adapted to some part to which a tube is to be connected. There is a bore 8 through the body member and surrounding the bore is a seat I which is shown in Figures 1 and 2 as tapered. The' tube 5 which is to .be clamped by the coupling has the end thereof flared as indicated at 8 and the seat I is adapted, to engage within the flared end of the tube. The body member is provided with a threaded portion 9. The nut z is provided with a threaded portion In which cooperates'with the threaded portion 8 on the body-member. The nut '2 is provided with a recess Ii and at the outer side of this recess said shoulder i2.

'I'hesieeve l is provided with a clamping head I! which is solid and theinn'er face 14 '0! this clamping head is tapered to conform in general to nut is formed with a the angle of the outer face of the flared end of L to the tightening of the parts for expandifig the 5 and will in part be hereinafter more fully disclosed. v

In the drawings, v Figure 1 is a longitudinal sectional view through a coupling with atube placed therein andiprior the tube. This sleevehead when forced against the flared end of the tube by the nut will press 7 the tube against the seat on the body member I and thus firmly grip and secure the tube tosaid body member. The sleeve is oi sum'cientlength so that it projects outwardly from the solid head. II to points well out beyond the nut. The sleeveis also provided with longitudinal slits l5 which extend from a point adjacent the, solid head ll to the outer. end of the sleeve. As shown, there.

are four slits thus forming iour sections of the sleeve which may more readily yield when a force deformable member. I a

Figure 2 is a view similar to Figure 1, but showing the nut-tightened onto the body member, the deformable ring compressed and expanded ainst the sleeve sp as to,cause the sieeveto contact withthe and the head of the sleeve, Pressed against the flared end of the tube for damping of the same against the seat on the- 8 pplied to the outer face or the sleeve-in the body. member p N v region of the slitted portion. The sleevehead is Figure 3 is a section on the lineiq of Figure 1, 45 also provided with a shoulder II which is opposed Figur 4 i pergp'ecflveyje w of t clamp): to the shoulder I! on thenut. The deformable sleeve. .member lies in the recess ll between these shoul- 1 Figure 5 is a vi gimflgr t w 1, b g'; ders I! and II. This deformable member may benut will directly ugage the head of thesleeve ing a slight modificatio 1 the nut whereby m made of any suitable material which, when pressed upon. will be deformed but which is not in the anal closing or th coupling, 7 compressible to anygreat extent. Rubber is prefingthe coupling Figure 6 is a view similar to Figure 5. but showin full closedposition. 7 is a view similarLto Figure 1, but showerably used. When the nut 2 is threaded onto the ,body member I: afterthe parts have been assemp I p bled as shown in Figure 1, this deformable memin: a further modified ronnj i' the invention ber will be pressedby the shoulder so as to be 7 deformed and extended transversely. The recess is so dimensioned that the outward expansion of portions of the ring to contact with the sleeve and press these yieldablefsections of the sleeve Figure 2. This contact of the yielding sections of the sleeve with the tube will dampen vibrations 4 within the tube. When the nut' is turned onto the body member the ring member 4 will be deformed transversely as stated, bringing the sleeve into .flrm contact with the tube and the said nut through the confined deformed ring 4 will force the head of-the sleeve into flrm gripping contact with the flared end of the tube and cause said tube end to be flrmly clamped'against the seat on the body member.

In'Figures 5 and 6 of the drawings, the cou-' pling in general is constructed the same as shown in Figures 1 to 2. The only distinction resides in f therlng 4 is limited and this will cause the inner The deformable ring is in general .of the same "construction as described above. 'The sleeve has a shoulder 26 which is opposed to the shoulder 12 and thedeformable member v inward into contact withthe tube as shown in an additional feature which has been applied to the nut, and therefore the numerals applied in detailto the coupling shown in Figures 1 audit have also been applied to the like features of construction in Figures 5 and 6. The additional feature noted is that the nut has two shoulders. It has.

a-shoulder i2 which engages a deformable ma- I terial and also a shoulder l1. When the nut is turned onto the body member in the construction shown in Figures 5 and 6, the deformable ring will be expanded transversely just as described in connection with Figures 1 and 2. The ring, however, is so dimensioned that when the sleeve has been contacted therewith and the-yieldable outwardly extending members pressed against the tube for dampening the same, then the shoulder I! will members of the sleeve for forcing them into. gripping engagement with the tube for damp-' ening thevibrations within the tube. After-the deformable member has clamped the sleeve against the tube, then the; shoulder II will contact with the shoulder 26 and will force the sleeve along the tapered surface 20 causing the end of the sleeve to be contracted and bite into the tube and force the tube positively against the seaton the body member.- r I It is obvious that many changes in the details of construction may be made without departing the appended claims.

l. A coupling for tubes comprising a body member, a nut having threaded engagement with said body member, a sleeve disposed within said nut and projecting outwardly from said nut along the tube, and a deformable ring disposed within said nut and surrounding said sleeve, said sleeve having a gripping head provided with a shoulder against which said ring may be pressed and longitudinal slits extending from points adjacent contact with the shoulder i8 for-the final setting up of the coupling and the clamping of the flared end of the tube. In other words, when the coupling is closed there is a deforming of the ring for the clamping of the sleeve and there is a positive movement of the sleeve into clamping engagement with the flared end of the tube.

. In Figures 7 and 8, which show afurther modifled form'of construction, the body member ii is 4 providedwith a seat it. The tube i9 is not flared,

but when clamped to the coupling the end of the tube engages this seat 18. The body member is 7 also provided with a tapered surface 20 which performs-a camming. action on the sleeve in the clamping of the tube. The nut 2 is provided with a shoulder I2 and also with a shoulder I! as described above. There are threaded connections between the nut and the body member.

The sleeve indicated at 2| .is diifently con-' structed fromlthe sleeve described in connection with the coupling shown in Figures 1 to 6. The

sleeve has a gripping portion 22 which is dimensioned so that when forced into centact with the tapered surface 20 it will be contracted and caused to bite into the tube as indicated at 23 in Figure 8. This will force the tube endwise into tight engagement with the seat [8. It will also form asealed connection between the tube and the sleeve.

.. Inasmuch as this portion of the'sleevecontacts with the camming surface which contracts it to accomplish the gripping. of the tube, itwill also make a tight sealing contact with the body mem her and this insuresa very tight seal formed between the tube and the coupling par-ts. The sleeve is provided with a portion extending "from the head'outwardly beyond the nut as indicated at 24. The sleeve is also provided with longitudinal slots 25 similar to those described in connection with Figures 1 and 2.

said shoulder to the outer end of the sleeve, said nut having a shoulder opposed to the shoulder on said head and dimensioned so that the ring when pressed upon by said nut will be deformed and caused to press the sleeve members projecting from' the nut into contact with the tube for dampening vibration therein and also caused to press against the shoulder on said head and move, the same endwise into gripping contact with the tube.

said body-member, a sleeve disposed withinsaid nutv and projecting outwardly from said nut along the tube-and a deformable ring disposed within said nut andsurrounding said sleeve, said sleeve having-a gripping head provided with a shoulder against which said-ring may'be pressed and longitudinal slits extending from points ad- Jacent said shoulder to the outer end of the sleeve, said nut having. a shoulder opposed to the shoulder on said head and dimensioned so that the ring whenpressed upon by said nut will be deformedand caused to press the sleeve members projecting from the nut intocontactwith the tube for dampening vibration therein and also caused to move endwise into gripping contact with the tube, said nut having a second shoulder disposed relative to the .flrst named shoulder thereon so that when said deformable member has been expanded into contact with V the sleeve and the sleeve member forced into oontact with the tube, said second shoulder will engage the shoulder on tively forcethe sleevehead into with the tube. I I

3. A coupling for tubes having the end thereof flared comprising a body member provided with a seat adapted to engage within the flared end from the spirit of the invention as set forth in 2.1a coupling for tubes comprising a body member, a nut having threaded engagement with r the 'sleevehead and p0si.- gripping contact with said body member, a sleeve disposed within said nut and projecting outwardly from said nut along the tube, a deformable ring disposed within said nut and surrounding said sleeve, said sleeve having a solid head provided with a tapered inner face adapted to engage the flared end of the tube for clamping the same against the seat on the body member, and with a shoulder against which said ring may be pressed, said sleeve havinglongitudinal slits extending from points adjacent said head to the outer end of the sleeve and forming therebetween members adapted to engage the tube for dampening vibrations therein. said nut having a shoulder opposed to the shoulder on said head and dimensioned so'that the ring when v pressed upon by said nut will be deformed and caused to press the sleeve members projecting 7 2,897,180 of the tube, a nut having threaded encasement causedv to press the sleeve members projecting from the nut into contactwith the tube and move the sleeve endwise for clamping the flared end of the tube against the seat on the body member, said nut having a second shoulder disposed relative to the first named shoulder thereon so that when said deformable member has been expanded into contact with the sleeve and the sleeve member forced into contact with the tube said second shoulder will engage the shoulder on the sleevehead and positively force the sleevehead into gripping contact with the tube.

5. A coupling for tubes comprising a body mem- 4 her. a nut having threaded engagement with said body member, a sleeve disposed within said nut and projecting outwardly from said nut along the tube, a deformable ring disposed within the nut from the nut into contact with the tube and 7 move the sleeve endwise for clamping the flared end of the tube against the seat on the body member. 4. A coupling for tubes having the end thereof flared comprising a body member provided with a seat adapted to engage within the flared end ofthe tube, a nut having threaded engagement with said body member, a sleeve dispomd within said nut and projecting outwardly from said nut along the tube, a deformable ring disposed within said nut and surrounding said sleeve, said sleeve having a solid head provided with a tapered inner face adapted to engage the flared end of the tube for clamping the same against the seat on the body member, and with a shoulder against which said ring may be pressed, said sleeve having longitudinal slits extending from points adjacent said head to the outer end of the sleeve and forming therebetween members adapted to engage the tube for dampening vibrations therein, said nut having a shoulder opposed to the shoulder on said head and dimensioned so that the ring when pressed upon by said nut will be deformed and and surrounding said sleeve said bodymember having a seat for the end of the tube and -'a cam-- ming surface surrounding the tube" and spaced therefrom, said sleeve having the inner end thereofdimensioned so that when forced into contact with the camming'surface on the body member said inner end will be contracted and caused to bite into' the tube and force the tube into iirm'sealing contact with the seat on the body member, said sleeve being provided with a shoulder against vwhich the ring may be pressed and longitudinal slits extending from points adjacent'said shoulder to the outer end of the sleeve,

said nut having a shoulder opposed to the shoulder on the sleeve and dimensioned so thatthe ring when pressed upon by said nut will be deformed and caused to press the sleeve members a projecting from the nut into contact with the tube for dampening vibrations therein, said nut f having a second shoulder adapted to engage the shoulder on the sleeve after said ring has been deformed for positively forcing the sleeve against the cumming surface for causing the inner end thereof to bite into and grip the tube.

. JOHN N. WOIJRAM. 

